If you like "bassy and warm sound and durability is a must" then that's where the A-Jays are teriffic, very high durabilty, not only the cable and housing but I burnt in my A-Jays Three on max volume for days and I think they just got happier from it. =) And they have great bass, it's really hard to find good bass in cheap IEM's trust me, most of the "bassy" ones have no control in the bass, it's just woofing all over the place.

What is the difference in SQ between a-jays three and four.Four got and remote and mic which are compatible with my itouch.And not have price difference if they two have equal SQ, i have to choose a-jays four coz of offering remote and mic.But SQ is my main concern.

Lol, it's not fair to compare amazon reviews when there's only a small handful.

On the A-Jays Three there were two reviews, one negative coz he said "they hurt his pinna" whatever that means, and the second one says this:

"I especially like the punctuated sound of the bass - it doen't bleed on and get mushy like other speakers are want to do. The exaggerated bass of electronica and rap is well defined and highlighted on these."

Yup, that is right, he explained it well, the best bass you'll find in a $50 IEM I think, and durability.

realvoices huh? I haven't heard of them, but the pictures of them in your review looked intruiging to me =)

How many IEM's have you compared the realvoices to?

I agree the A-Jays one/four aren't what he is after, there was a high jump in sound quality from the ones' to the two's.

There is a lot under $100 and it's difficult for anyone to decide, I don't think a few amazon reviews here and there are a good indicator, but sometimes they are very good and amusing, like the "musician of 20 years" that bought an RE0 and said it was a painful injection of sound.